After looking over the numbers again this week I think that the equations I was using to calculate AH were incorrect as E=1/2CV^2 yields only 0.164 kwhr.
I’ve looked at the major ultracapacitor companies, so far I’ve only seen 5000F at 3.9 volt or 90volt at 250F. Since a farad come out to be about an amp/sec. even 10 of them, (and they are around a cubic foot for that voltage). Barely makes 6 amp hours, and the voltage is dropping the entire time. I havent looked at the cost lately, but other than to store regeneration, I dont see powering an entire car with it. They are improving all the time maybe soon someone will have a breakthrough. P.S. I’m talking confirmed delivery dates of less than 30 days, not empty promises.